European plane manufacturer Airbus is warning the British government that it may leave the country, putting thousands of jobs at risk, unless Britain speedily concludes a satisfactory exit deal.

BMW UK boss Ian Robertson says clarity is needed by the end of the summer.

BMW makes the Mini and Rolls Royce and employs about 8,000 people in the UK.

"We are confident that we are going to get a good deal where trade is as free and frictionless as possible, including for the aerospace sector", the prime minister's spokeswoman said.

But the People's Vote campaign says this should only happen if the withdrawal deal negotiated by Prime Minister Theresa May and the other 27 European Union members is approved in another public vote.

While many business leaders have demanded clarity about the future with Britain set to leave the European Union in nine months, Airbus' sheer size and role in the economy make it an influential voice in the Brexit debate. We have repeatedly warned that the United Kingdom can not take the huge economic risk of cutting ourselves adrift from the Single Market and Customs Union.

The former Secretary of State for Wales, who represents Preseli Pembrokeshire, tweeted: "The enormous Airbus factory in North Wales is one of the jewels in the crown of United Kingdom manufacturing".

It said it would "carefully monitor any new investments", and Williams admitted that "in any scenario, Brexit has severe negative consequences". "Put simply, a No Deal scenario directly threatens Airbus" future in the United Kingdom'.

Mr Reynolds said he had visited Downing Street twice this year to discuss the impact of Brexit with government ministers but was not sure they understood the concerns.

"Given the "No-deal/hard Brexit" uncertainties, the company's dependence on and investment in the flagship Wing Of Tomorrow programme would also have to be revisited, and corresponding key competencies grown outside the UK".

Conservative MP for Pembrokeshire, where Airbus has a factory, and prominent Brexiteer Stephen Crabb tweeted: 'The enormous Airbus factory in North Wales is one of the jewels in the crown of United Kingdom manufacturing.

Steve Turner, of Britain's biggest trade union Unite, added: "People voted to leave the EU, but didn't back leave to lose their jobs and see their livelihoods smashed on the cliff face of a "hard Brexit".

Airbus has said it is running out patience with the government and a "no-deal" Brexit would mean "chaos at the borders".

"When we look at the next generation of wings, which is called "Wing of the Future", we are working on that today in development in the United Kingdom and clearly now we are seriously considering whether we should continue that development or find alternative solutions".